A Seattle police sergeant in the domestic violence unit was arrested at Octoberfest in Leavenworth after police say he dragged his girlfriend in front of Chelan County sheriff's deputies.

The incident happened Saturday near the Octoberfest east gate – the gate farthest from downtown Leavenworth – when Sgt. Ronald Lee Murray, 55, and his 44-year-old girlfriend were waiting for a shuttle bus, Det. Sgt. Jerry Moore said.

"A few of our officers saw Mr. Murray dragging the female victim by the upper part of her jacket and hair through the gravel parking lot," he told seattlepi.com. "Numerous witnesses as well as officers saw the assault take place."

The alleged assault came after the woman, also from Puyallup, was upset that Murray gave away $20 in beer tickets, according to police. She was described as being "clearly intoxicated," but there were not incident report notes on Murray's possible intoxication, Moore said.

Investigators say the incident occurred at 11:47 p.m. The woman was not taken to a hospital, though a deputy described her as hysterical from the assault.

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Murray identified himself as a Seattle Police officer, was cooperative and "advised he knew he was in the wrong," according to the Sheriff's Office incident report.

Murray was transported to the Chelan County Regional Justice Center, where he eventually posted $10,000 bond. He's expected to enter a plea later this month, according to a Chelan County District Court spokeswoman.

Moore said Murray has been charged with fourth-degree domestic violence assault and a no-contact order with the victim was issued after his arrest.

Seattle police spokespeople did not name Murray or give details of the incident, but Det. Mark Jamieson said in a department statement the 28-year veteran "will receive an investigatory transfer pending the ongoing investigation."

Jamieson also noted October is National Domestic Violence Awareness Month.

"The department has initiated the Office of Professional Accountability (OPA) complaint process," Jamieson said. "The OPA will actively monitor the ongoing Chelan County criminal case for developments.

"Upon the conclusion of the criminal case, OPA will proceed with a separate administrative investigation into the employee's conduct."

Murray, a Puyallup resident, was hired by Seattle police in July 1983. Murray previously worked with the South Precinct Anti-Crime Team in the 1980s when he was considered something of an expert on California gangs, having served on the Ventura, Calif., police department.

Octoberfest in Leavenworth, a town of roughly 2,000 people modeled on a Bavarian village, is a three weekend festival which began Sept. 30. Oct. 15 was the final day of the festival known for beer, live music, German food and other arts.